5 Ways To Calculate Excel Weeks Between Two Dates

Calculating the number of weeks between two dates in Excel can be a useful skill for a variety of tasks, such as tracking project timelines, scheduling appointments, or analyzing data trends. Fortunately, Excel provides several ways to calculate the number of weeks between two dates, and we'll explore five different methods in this article.

Whether you're a seasoned Excel user or just starting out, these methods will help you to accurately calculate the number of weeks between two dates. So, let's dive in and explore the different ways to calculate Excel weeks between two dates.

Method 1: Using the WEEKDAY Function

One of the simplest ways to calculate the number of weeks between two dates is by using the WEEKDAY function. This function returns the day of the week corresponding to a date, and we can use it to calculate the number of weeks between two dates.

Here's the formula:

= (END_DATE - START_DATE) / 7

Where END_DATE is the end date and START_DATE is the start date.

For example, if we want to calculate the number of weeks between January 1, 2022, and December 31, 2022, we can use the following formula:

= (DATE(2022, 12, 31) - DATE(2022, 1, 1)) / 7

This formula returns the number of weeks between the two dates, which in this case is 52.

Method 2: Using the DATEDIF Function

Another way to calculate the number of weeks between two dates is by using the DATEDIF function. This function calculates the difference between two dates in a specified interval, such as days, weeks, months, or years.

Here's the formula:

= DATEDIF(START_DATE, END_DATE, "w")

Where START_DATE is the start date, END_DATE is the end date, and "w" specifies that we want to calculate the difference in weeks.

For example, if we want to calculate the number of weeks between January 1, 2022, and December 31, 2022, we can use the following formula:

= DATEDIF(DATE(2022, 1, 1), DATE(2022, 12, 31), "w")

This formula returns the number of weeks between the two dates, which in this case is 52.

Method 3: Using the WEEKNUM Function

The WEEKNUM function returns the week number of a date, and we can use it to calculate the number of weeks between two dates.

Here's the formula:

= WEEKNUM(END_DATE) - WEEKNUM(START_DATE) + 1

Where END_DATE is the end date and START_DATE is the start date.

For example, if we want to calculate the number of weeks between January 1, 2022, and December 31, 2022, we can use the following formula:

= WEEKNUM(DATE(2022, 12, 31)) - WEEKNUM(DATE(2022, 1, 1)) + 1

This formula returns the number of weeks between the two dates, which in this case is 52.

Method 4: Using the INT and MOD Functions

Another way to calculate the number of weeks between two dates is by using the INT and MOD functions.

Here's the formula:

= INT((END_DATE - START_DATE) / 7) + MOD((END_DATE - START_DATE) / 7, 1)

Where END_DATE is the end date and START_DATE is the start date.

For example, if we want to calculate the number of weeks between January 1, 2022, and December 31, 2022, we can use the following formula:

= INT((DATE(2022, 12, 31) - DATE(2022, 1, 1)) / 7) + MOD((DATE(2022, 12, 31) - DATE(2022, 1, 1)) / 7, 1)

This formula returns the number of weeks between the two dates, which in this case is 52.

Method 5: Using a Formula with Multiple Criteria

Finally, we can use a formula that takes into account multiple criteria, such as the start date, end date, and day of the week.

Here's the formula:

= IF(WEEKDAY(START_DATE) = 1, (END_DATE - START_DATE) / 7 + 1, (END_DATE - START_DATE) / 7)

Where END_DATE is the end date and START_DATE is the start date.

For example, if we want to calculate the number of weeks between January 1, 2022, and December 31, 2022, we can use the following formula:

= IF(WEEKDAY(DATE(2022, 1, 1)) = 1, (DATE(2022, 12, 31) - DATE(2022, 1, 1)) / 7 + 1, (DATE(2022, 12, 31) - DATE(2022, 1, 1)) / 7)

This formula returns the number of weeks between the two dates, which in this case is 52.

In conclusion, there are several ways to calculate the number of weeks between two dates in Excel, and the method you choose will depend on your specific needs and preferences. Whether you use the WEEKDAY function, the DATEDIF function, the WEEKNUM function, or a formula with multiple criteria, you can accurately calculate the number of weeks between two dates in Excel.

Gallery of Excel Date Calculations

FAQs

Gallery of 5 Ways To Calculate Excel Weeks Between Two Dates